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TitleCharacterization of balanced transmission line by microwave techniques
Publication TypeJournal Article
Year of Publication1998
AuthorsTeal, P.D., Scott N.L., and Vaughan R.G.
JournalIEEE Transactions on Microwave Theory and Techniques
Issue12 PART 1
Pagination2148 - 2151
Date Published1998
ISSN00189480 (ISSN)
KeywordsBaluns, Cable sheathing, Deembedding techniques, Electric cables, Electric impedance, Electric lines, Electromagnetic wave propagation, Microwave measurement, Plastic products
AbstractThis paper presents a method of experimentally characterizing a balanced transmission line using microwave techniques. An unbalanced measurement instrument and the transmission line under test must be connected by a balun, and the effect of the balun must be removed from the measured data. Deembedding techniques are discussed briefly, and several baluns are evaluated. Two methods of performing the measurement are presented. The first uses a one-port measurement where known loads are measured from the end of various lengths of transmission line. The second uses two-port measurements with different transmission-line lengths, and is more effective for measurement of line loss. Experimental results are presented for 2-mm toughened plastic sheath (TPS) twin and earth power cable for the range of 0.3-300 MHz. © 1998 IEEE.

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